I was using the Joyful wheel sponge but was purchased as an alternative seems to have become discontinued.
I want a little more length. If there is a length of about 35 cm I think that reach all the way into the wheel.
Towards the back of the rim shape is also happy if guests to add a large spherical sponge complex at the tip of the goods of the status quo when it was possible because there is a step, such as escape from the sponge rather than a plane.